Lawnmower underdeck washer



FIG. 1 is a front elevational view of the lawnmower underdeck washer showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a reduced perspective view thereof, showing the design in use, the broken line showing of the hose and water is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for a lawnmower underdeck washer, as shown and described. 